< Wall Street's Nerds: The World's Most Powerful Trading Executives

6. Glenn Lesko
President and Chief Executive Officer
Bloomberg Tradebook
PNR

Before taking the helm of Bloomberg Tradebook in 2015, Glenn Lesko held senior positions at another leading agency brokerage, Instinet, where he started as CEO of Instinet Asia in 2006 and later became head of Americas equities. The 48-year-old says that what sets Tradebook apart from its competitors is, well, Bloomberg and its formidable data and technology assets. Part of the strategic advantage for Tradebook, which handles equity, options, and futures trading on more than 125 liquidity venues for a wide range of institutional clients, is "finding ways to maximize our unique strengths as an organization," Lesko says. These include "data and analytics capabilities like no one else has," along with extensive market and network connectivity and the "agency ethos" of acting independently and in clients' best interests. (Raymond Tierney III, No. 1 last year, was formerly CEO of Bloomberg Tradebook and is currently global head of Bloomberg's broker-dealer and sell-side trading solutions business.)

Lesko points to such examples of Tradebook innovations as Strategy Analyzer, or STAZ, a pretrade tool that has been enhanced with "in-trade" analytics to adjust to market conditions as they occur and choose algorithms accordingly; an agency request-for-quote platform for anonymous block trading of exchange-traded funds; the PAIR algorithm for statistical arbitrage and price improvement; and, announced on March 6, the analytics-driven OPTX best-execution approach that responds dynamically to real-time data and changing market conditions. "Bloomberg Tradebook has more than 20 years of best-execution experience," Lesko says. "We are thinking about how to continue to accomplish that over the next 20 years."

 
The 2017 Trading Tech 40

1. Richard Prager BlackRock 2. Chris Isaacson Bats Global Markets 3. Bradley Peterson Nasdaq Paying it Forward: A Fidelity CIO’s Journey to Purposeful Philanthropy Sponsored by Fidelity Investments July 17, 2025 4. Brad Levy MarkitSERV 5. Dan Keegan Citi

6. Glenn Lesko Bloomberg Tradebook 7. Bryan Durkin CME Group 8. Mayur Kapani Intercontinental Exchange 9. Mike Blum KCG Holdings 10. Raj Mahajan Goldman Sachs Group

11. Ronald DePoalo Fidelity Institutional 12. Nick Themelis MarketAxess Holdings 13. Jenny Knott NEX Optimisation 14. Billy Hult Tradeweb Markets 15. Rob Park IEX Group

16. Bill Chow & Richard Leung Hong Kong Exchanges and Clearing 17. John Mackay (Mack) Gill MillenniumIT 18. Paul Hamill Citadel Securities 19. Eric Noll Convergex 20. Veronica Augustsson Cinnober Financial Technology

21. Tyler Moeller & Joshua Walsky Broadway Technology 22. Alasdair Haynes Aquis Exchange 23. Gaurav Suri Arcesium 24. Manoj Narang Mana Partners 25. Michael Chin & Neill Penney Thomson Reuters

26. Robert Sloan S3 Partners 27. Anton Katz & Stephen Mock AQR Capital Management 28. Donal Byrne Corvil 29. Stu Taylor Algomi 30. Alfred Eskandar Portware

31. Steven Randich Financial Industry Regulatory Authority 32. R. Cromwell Coulson OTC Markets Group 33. Peter Maragos Dash Financial 34. John Fawcett Quantopian 35. Donald Ross III PDQ Enterprises

36. Jennifer Nayar Vela Trading Technologies 37. Dan Raju Tradier 38. Susan Estes OpenDoor Trading 39. David Mercer LMAX Exchange 40. Oki Matsumoto Monex Group